Acetylene-gas generator.



No. 788,901. PATENTED MAY 2, 1905. 0. H. HASNEDER.

AOETYLBNE GAS GENERATOR.

APPLICATION FILED 0OT.27,1904.

3 SHEETS-SHEET 1.

WITNESSES: INVENTOR ATTORNEYS W/INES'SES:

0; H. HASNEDER.

AOBTYLBNE GAS GENERATOR APPLICATION TILED 001211904.

1 i 'i| ii: In a in m PATENTED MAY 2, 1905.

3 SHEETS-SHEET 2.

i Hi INVENTOR Arm/Mrs No.788,901. PATENTED MAY 2, 1905."

0. H. HASNEDER.

AOETYLENE GAS GENERATOR.

APPLICATION FILED 001227.1904.

3 SHEETS-SHEET 8.

= a all.

,l. gm l m n ATTORNEYS NITED STATES Patented May 2, 1905.

PATENT OFFICE.

AOETYLENE-GAS GENERATOR.

SPECIFICATION forming part of Letters Patent No. 788,201, dated May 2, 1905.

Application filed October 27, 1904. Serial No. 230,156.

To (all whom it may concern.-

Be it known that LOTTO HUBER HAsNEDnR, a citizen of the United States, and a resident of Seaford, in the county of Nassau and State of New York, have invented a new and Improved Gas-Generator, of which the following is a full, clear. and exact description.

My invention relates to acetylene-generators, particularly useful in the present state of the art for generators of the type in which carbid is fed into water; and the purpose of the invention is to improve the construction of such machines and toinsure more efficient regulation than heretofore and to render the machine safe under all conditions of use.

A further and particular purpose of the invention is to provide a simple and readilycomprehensible safety-feed mechanism for the carbid from the hopper to the generator, controlled by one movement on the part of the operator, and said mechanism when operated in one direction simultaneously opens access to the hopper, closes the delivery-section of the hopper, and establishes communication between the hopper and outside atmosphere for the escape of any gas which may be in the hopper prior to introducing the carbid therein, the said feed mechanism when operated in one direction acting to close the inlet of the hopper and the vent for the gases and open communication between the hopper and the generator.

Another purpose of the invention is to provide cut-ofis forming a portion of the feed mechanism, which regulate the feed of the carbid, which act without danger of choking, and which when closed seat themselves in the carbid-bed, completely covering the openings they are designed to cover and absolutely preventing in their closed position any leakage of the carbid.

Another purpose of the invention is to provide means for conveniently cleaning the generator and means'which act to prevent the generator being opened for cleaning before the gas has been permitted to escape from the generator and the gasometer.

The invention consists in the novel construction and combination of the several parts, as

' will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a perspective view of the improved machine. Fig. 2 is a vertical section through the machine, the cut-offs for the feed mechanism being in closed position, preventing the feed of carbid from the hopper to the generator. Fig. 3 is a vertical section through the hopper, the feed mechanism, and the generator and connected parts, the cut-offs of the feed mechanism being shown in position to permit the introduction of carbid into the hopper and the flow of carbid therefrom, communication between the hopper and generator, however, being closed. Fig. 4c is a horizontal section taken substantially on the line 4 1 of Fig. 3. Fig. 5 is a vertical section of a part of the lower portion of the gasometer, and Fig. 6 is a horizontal section taken practically on the line 6 6 of Fig. 2.

The gasometer A illustrated is of the type having a rising and falling water-sealed bell 10, fitting within a stationary lower member or body 11. The body or lower member 11 is shown provided with a horizontal partition 12, located between its center and its bottom portion, as is shown in Fig. 2, which divides the body of the said gasometer into an upper chamber 13 and a lower chamber or compartment 141. Three crossfittings are located within the chamber 1 1 just below the partition 12, the fittings being placed end to end, as is also shown in Fig. 2, being designated, respectively, as 15, 16, and 17. A stand-pipe 18 is screwed at its lower end into a suitable aperture in the partition 12 and into the upper branch of the fitting 15. A similar pipe 19 is similarly applied to the central fitting 16, and a third stand-pipe 20 is screwed into the partition 12 and into the upper branch of the third fitting 17. The upper ends of all of the stand-pipes are open, and these standpipes extend a slight distance beyond the upper edge of the lower member or body 11 of the gasometer. The bell 10 is provided at its upper end with two cup projections 21, adapted when the bell is entirely down in the body or lower member 11 of the gasometer to receive the upper ends of the stand-pipes 18 and 20. Between the cup projections 21 a third cup projection 22 is formed on the top of the bell, adapted to receive the upper end of the central stand-pipe 19 when the bell is in its lower position, and a tube 23 extends down from the cup projection 22 within the bell, the said tube 23 being telescopically received by the stand-pipe 19, and usually between the center and the lower end of the tube 23, carried by the bell, an opening 24 is made, the said opening being of any desired slze.

The gas from the generator B is passed to the stand-pipe 18 and by means of the connections to be hereinafter described is then directed to the stand-pipe 20, which standpipe is an exit-pipe for the gas, the pipe 18 being practically the receiving or inlet pipe. The central stand-pipe 19 is a reliefpipe, and when the gasometer is overcharged to such an extent that the bell is raised as far as safety will allow the gas in the gascompartment of the gasometer will enter the opening 24, which will then be above the water-line in the gasometer, and the gas thus entering will find an exit through the pipe 19, heretofore described, thereby relieving the gasometer from undue pressure, the opening 24 in the tube being carried down the relief-pipe 19 when the bell is dropped to a safety-point.

A supply-pipe 25 is connected with the top portion of the generator B, the top whereof is conical, and this supply-pipe 25 is made to enter the outer side branch of the fitting 15. The fitting 15 and the fitting 16 are connected by a nipple 26, as is shown in Fig. 6, and this nipple between the two fittings is provided with a partition 27, dividing the nipple into two compartments. A second nipple 28 connects the fitting 16 with the fitting 17, and this latter nipple 28 is likewise provided between fittings with a partition 29, dividing said nipple also into two compartments. A pipe 30 is connected with the fitting 17 at a point opposite that at which the nipple 28 is introduced, and said pipe 30 is provided with a valve 31, as is shown in Fig. 2. This pipe 30 is connected with a purifier 32, from which the gas is conducted in the customary manner.

A pipe 33 is connected with the lower member of the fitting 15, and said pipe 33 is open at its lower end and extends down within the compartment 14 of the body of the gasometer to a point near its bottom. A similar pipe 34 is connected with the lower branch or member of the fitting 17, extending down into the compartment or chamber 14 the same distance as the opposing pipe 33, and the said compartment 14 contains water, as is shown at 35 in Fig. 2, the level of the water being at a point near the upper ends of the said pipes 33 and 34. The lower member of the intermediate fitting 16 is open, as shown at 36, and said fitting is also open at the back, as shown at 37, while an outlet-pipe 38 is connected with said fitting at or near its center. Said outletpipe 38 extends out through the body of the gasometer, as is shown in Fig. 1, being connected with a second pipe 39, carried up to the outside atmosphere or to any convenient point.

The gas entering the gasometer through the pipe 25 enters the fitting 15, and as the gas cannot descend owing to the water seal in the pipe 33 and cannot pass out at the side of the fitting owing to the partition 27 in the conmeeting-nipple 26 the gas is forced to find an exit at the upper end of the stand-pipe 18 into the gas-receiving portion of the bell. Under ordinary circumstances the gas will now find an exit from the gasometer through the outlet-pipe 20, and owing to the partition 29 in the nipple 28 and the water seal in the pipe 34 the gas in the outlet-pipe 20 is compelled to pass into the purifier 32 through the connectingpipe 30. As before stated, when the gasometer is too heavily charged the surplus gas will pass through the opening 24 in the tube 23, whichis then above the water-line in the bell, and will pass down through the relief-pipe 19 and will be compelled to find an exit through the ofttake 39.

A guide-bail 40 is secured to the upper portion of the body or lower portion 11 of the gasometer, and the side members of the bail are received between the members of horizontal forks 41, secured to the top of the bell 10. Water is supplied to the body or lower member 11 of the gasometer through a suitable guarded opening 42 near the top of the lower member of said gasometer, as shown in Fig. 1.

An overflow-tank 43 is exteriorly located at the lower portion of the body or lower member 11 of the gasometer, and this tank is provided with a stand-pipe 44, which stand-pipe passes through the bottom of the overflowt-ank and is connected with a horizontal pipe 45, closed at its outer end by a suitable plug 46. A pipe 47 is connected with the opposite end of the horizontal pipe 45, and the pipe 47 extends within the lower compartment 14 of the lower member of the gasometer and is given more or less of an upward bend within said compartment, as shown in Fig. 5. This compartment receives its proper amount of water by pouring the water into the stand-pipe 44 of the said overflow-tank 43. When the water has reached the proper level in the overflow-tank and in the compartment 14 of the gasometer. the water will fiow off through the opening 48 in the said overflow-tank, at which opening an ofi'take or waste pipe 49 is introduced. (See Fig. 3.) When water is to be drained from the compartment 14, the plug 46 is removed from the lower horizontal pipe 45, connected with the overflow-tank and with the said compartment.

The carbid is fed into the generator B at its mouth, which is located at the central upper portion of the generator, and at the said mouth a downwardly-extending conical distributer 51 is secured within the generator. This distributer is provided with a spreader 52, also of conical shape, which spreader is supported by a spider 53 or its equivalent. Under this construction the carbid is not delivered to the water in a solid mass, but is distributedover a considerable surface, thereby materially assisting in the rapid generation of the gas and its distribution in the gasometer.

I employ a safety-feed device in connection with the generator, which safety-feed positively controls the amount of carbid to be fed to the generator and is so constructed that controlling-valves may seat themselves, so as to absolutely stop a supply at any time, and when the valves are so seated it is impossible for any carbid, no matter how fine, to leak beneath the valves. The said safety-feed mechanism is, further, so constructed that when the hopper is to be supplied with carbid the outlet of the hopper is shut ofi simultane ously with the mouth being unclosed and communication established between the interior of the hopper and the outside atmosphere for the escape of any gas which may be contained in the feed mechanism. The valve at the mouth of the hopper and the valve at the vent-pipe closes as the valve at the outlet of the hopper is opened. The hopper 0, forming a portion of the said safety-feed mechanism, as is shown in Figs. 1, 2, and 3, is provided with a tapering bottom 56, said bottom being inclined from its sides downwardly and inwardly toward an outlet 58, located centrally at the bottom portion of the hopper. A valve-casing 57, having an upper and a lower opening, is screwed at its upper end into the outlet 58 of the hopper and at its lower end is screwed upon the eXteriorlythreaded portion 59 of the mouth of the generator.

A collar 60 is formed in the hopper C around the outlet 58 therein, as is shown in Figs. 2 and 3, and the space between the exterior of the collar 60 and the tapering wall of the bottom of the hopper constitutes an annular pocket, for a purpose to be hereinafter described. I

A valve 62 in the casing 57 is provided with an opening capable of registry with the upper and the lower openings in the casing 57, and the valve-stem 63 is provided with a handle 64 at its outer end. as is shown in Figs. 1 and 2. A receptacle 65 in the form of an inverted cone is secured in any approved manner within the hopper 0, being shown integral therewith in Fig. 2 of the drawings,

and frictionally held in Fig. 3, and the said receptacle 65 is provided with an outlet-opening 66 in its bottom or lower end,'and within the said receptacle 65 a collar 68 is constructed around the outlet-opening 66 and an annular pocket 67 is thus formed between the said collar and the adjacent wall of the receptacle, the pocket 67 corresponding to the pocket 61 at the bottom portion of the hopper proper.

The carbid is fed into the hopper through its mouth 69, which is at the upper end of the hopper, and this mouth is normally closed by a cap 70, exteriorly screwed on the said mouth portion. as is shown in Fig. 2, and this cap is swiveled upon a support 71, said support being hinged to a link 72, and said link in its turn is pivoted to a standard 73, extending from the upper portion of the hopper. A valve-casing 74 is located just below the mouth 69 of the hopper, having an opening connecting with the said mouth and with the interior of the hopper, and a valve 75 is mounted to turn in the said casing, having an opening capable of communication with both openings in the valve-casing, and the stem 76 of the valve 75 is provided with a crank-arm 77, which extends in an opposite direction to that of the handle 64, connected with the valve stem of the lower valve 62, as is shown best in Fig. 1. The said crank-arm 77 and handle 64 are pivotally connected by a bar 78, as is also best shown in Fig. 1, which bar extends above and beyond the crank-arm 77.

A vent-pipe 7 9 is connected with the mouth portion of the hopper, and said vent-pipe is made to extend usually to the outside atmosphere and is provided with a valve 80, the stem 81 of which is provided with a crankarm 82, having the same inclination as the crank-arm 77, as is also shown in Fig. 1. Thus it will be observed that when the han dle 64 is moved in one direction the valve at the mouth of the hopper will be opened and likewise the valve in the vent-pipe 73, and at the same time the valve 62 at the bottom of the hopper will be closed, as is shown in Fig. 3. When the handle 64 is turned in a reverse direction, the valves at the upper portion of the hopper are closed and the valve 62 at the lower end of the hopperis opened.

By attaching the cap 7 0 to the hopper in the manner described it is not liable to be lost, and by coupling the valves in the manner described the outlet of the hopper is surely closed when the mouth is opened for the reception of carbid, and all gas contained in the hopper will escape and will be conducted from the room, and thus cannot possibly be ignited.

In connection with the hopper C, I have shown two controlling-valves employed, (designated, respectively, as 83 and 84,) although but one valve need be used, if so desired. The valve 83 is adapted to close the outlet of the hopper and is dished upon both its upper and its lower faces, so that it can fit over the col lar 60 at the bottom of the hopper and enter the pocket 61 around the said collar and find a seat in the carbid in that portion of the hopper, and being so seated it is impossible for any carbid to find its way beneath the valve. Under the seating conditions of the valves ordinarily employed lumps of carbid frequently rest upon the valve-seats and prevent the valves from thoroughly closing, so that there is a feed of carbid when none is required or desired. The cupped upper surface of the controlling-valve 83 permits the said valve, if necessary, to fit to the outlet portion of the receptacle 65. The upper valve 84 is provided with a cupped under face adapted to fitover the collar 67 at the outlet of the receptacle 65, and this valve seats itself in carbid in the pocket 68, formed at the bottom of the receptacle in the same manner as does the valve 83 at the bottom of the hopper. These two valves are secured on a stem in such manner that when one valve is seated the other valve is seated also and when one valve is raised or unseated the other one is proportionately raised. Thus when the valves 83 and 84; arein the open position shown in Fig. 3 practically the same amount of carbid will be discharged from the receptacle into the hopper as will be discharged from the hopper into the generator when the valve 62 at the outlet of the hopper is opened. The valve-rod 85 is pivotally connected usually by a link 86, as is shown in Fig. 2, with a crankarm 87, located centrally on a shaft 88, journalcd at the upper portion of the hopper, and this shaft and the link and crank-arm are within a suitable housing 89, so that they are protected from the carbid. In order that the carbid may be distributed around the receptacle 65, and thus have a uniform flow there from, a spreader of substantially conical shape extends downward from the aforesaid housing 89.

Guide-rods 91 are preferably carried from the lower controlling-valve 83, so as to steady and guide the movement of the valve-rod 85. These guide-rods 91 have sliding movement in sockets 99.,formed on the inner face of the receptacle C.

The shaft 88 is provided with a crank-arm 91 at one outer end, as is shown in Fig. 1, and by means of this crank-arm 91 the valverod 85 may be agitated and more or less of the carbid be fed, as desired, from the hopper to the vessel it is to supply; but the supply of carbid in operation is under the control of the bell 10 of the gasometer and the valves are opened for the feed of oarbid proportionately as required to keep the bell at a certain elevation. As the bell rises the valves will be proportionately closed until when the bell reaches its normal height above the body the valves will have been fully seated, the valves being heavy enough to gravitate to their seats. As is shown in Fig. 1, this automatic operation may be accomplished by causing the shorter end 93 of a lever 93 to have a bearing on the under face of the crank arm or handle 91 attached to the valve-carrying shaft .88, the said lever 93 being fulcrumed upon a bracket 94:, extending from the hopper, and the other end of the said lever 93 has a sliding and pivotal connection with the bell at its upper central portion, as is shown at 95 in Fig. 1.

At the bottom of the generator B plates 96 are located, which incline downwardly and inwardly from the sides of the generator to a space 97 at the center, and an agitatingblade 98, usually T-shaped in cross-section, is made to operate in the said space 97, as is shown in Figs. 2 and 3, the agitating-blade having a hinged connection 99 with one of the plates 96. Thus the generator B has an inclined false bottom, and when the agitator is to be cleaned the hydrate which may accumulate at the bottom of the generator may be stirred up and can readily pass off with the water.

The generator receives its supply of water through a tube 100, which extends from the top portion of the generator to a point near the bottom, as is shown in Fig. 3, and this tube, by preference, is more or less tapering. The agitating-blade 98 is usually operated by means of a rod 102, which extends up through thelilling-tube 100 and is pivotally connected at its lower end with the agitating-blade 98 by means of a link 101, (also shown in Fig. 3,) and the said rod 102 is provided, preferably, with a handle 103 at its upper end, which leads into the upper portion of the tube 100, as is shown in Fig. 1.

An overflow-pipe 104 is connected with the upper end of the filling-tube 100, and said overflow-pipe 10 1, as best shown in Fig. 1, extends down at the outside of the generator and is connected with a waste-pipe 105, as is likewise the overflow-pipe 49, connected with the overflow-tank 13, and a pipe 106 is connected likewise with the waste-pipe 105 and with the interior of the generator B, the water and sediment being adapted to pass off from the generator to the waste pipe 105 through said pipe 106. Said pipe 106 is provided with avalve 107, having a suitable handle 108, as is shown in Figs. 1 and 3, and an arm 109 extends outward from the said handle, being moved when the handle is moved.

-A pipe 110, which is a branch of the offtake pipe 39, leading out from the gasometer, is connected with the generating-space in the generator B, and this pipe 110 is provided with a valve 111, operated usually through the medium of a suitable handle 111. A cover-plate 112 is attached to the movable portion of the valve 111 by means of a pin 113 or its equivalent, and normally one end of this plate is adapted to extend over and close the upper end of the filling-tube 100 for the generator B, the other end of the cover-plate 112 being of semicircular shape and wider than the end which extends over the said tube 100, the form of said cover-plate 112 being clearly shown in Figs. 1 and 1. This coverplate at its wider end has an opening 114: produced therein near one side or that side which is nearest the gasometer.

In order that the valve 107 shall not be opened to discharge the water from the generator B until the valve 111 has first been opened to permit the gas in the generator to pass out through the pipe 110, I employ a very simple safety device for such purpose. This safety device consists of a rod 11 1, which is pivoted at its lower end to the arm 109, extending from the handle 108 of the valve 107 at the bottoin of the generator, and this rod 114: passes upward through suitable guides 115 and 116 at the outer side of the generator, as is shown in Fig. 1, and when the valve 107 is closed the upper end of the rod 114C will bear against the upper face of the cover-plate 112, the cover-plate being in its normal position, and consequently the handle of the valve 107 cannot be operated to open the valve without breaking the rod; but when the generator is to be cleaned the valve 111 is first opened, being carried to the position shown in Fig. 1, and the cover-plate 112 will be moved with the valve to such an extent that the end which is normally over the filling-tube 100 is carried away from the said tube and that portion of the plate 112 in which the aperture 114: is produced is brought in such position, as is shown in Fig. 4, that the upper end of the locking-rod 11 1 may pass through the said aperture. Consequently at such time and at such time only can the valve 107 be opened.

In the general operation of the device the double valves forming a portion of the feed mechanism are operated through the medium of the handle 64 in a manner to open the upper valve and close the lower one and at the same time open the vent-valve 80 to permit the escape of any gas which may be in the hopper (J, and then the carbid by the operation of the valves 83 and 84, which in their turn were operated from the gasometer, will permit the carbid to How down from the upper portion of the hopper to the lower portion, where it will be held in check by the lower valve 62. The handle 64 ot' the valve-stem 63 of the valve 62 is then operated in an opposite direction to close the upper valve and to open the lower valve 62, which had formerly been closed, thus permitting the carbid in proper charge to drop down from the hopper into the generator B, where it is evenly distributed by the conical conductor 51 and spreader 52.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In acetylene-gas generators,a safety-feed consisting of a hopper provided with an inlet and an outlet, the said hopper having a collar around its outlet within the hopper and at its lowest point, a receptacle within the hopper, shaped as an inverted cone and having an outlet at itscontracted end above and in alinement with the outlet for the hopper, and a valve having dished upper and lower surfaces, which valve is mounted for movement to and from the two outlets, acting to open one when it closes the other.

2. In acetylene-gas generators, the combination of a safetvr'eed for carbid and a gasometer, the said safety-feed consisting of a hopper having a collar around its outlet within the hopper and at its lowest point, a receptacle shaped as an inverted cone held within the hopper over its outlet and having an outlet at its contracted end in vertical alinement with the outlet of the hopper, a valve dished upon opposite faces, adapted for movement to arid from the outlets to open and close the same, a stem for the valve, having guided movement in the hopper, means for operating the stem, and devices externally operated for operating said means, which devices in their turn are operated by the rise and fall of the gasometer-bell.

3. In acetylene-gas generators, the combination of a safety-feed for carbid and a gasometer, the said safety-feed consisting of a hopper having a collar around its outlet within the hopper and at its lowest point, a receptacle shaped as an inverted cone held within the hopper over its outlet,'said receptacle having an outlet in its contracted portion in vertical alinement with the outlet in the hopper, said receptacle also having an interiorly-located collar at its inlet, a valve having dished upper and lower faces, being adapted for movement to and from the two said outlets, a stem for the valve, a second valve located on the said stem within the receptacle, which upper or second valve in the upper position of the lower valve uncovers the outlet of the receptacle, and in the lower position of the lower valve closes over the collar of the receptacle, and means for operating the valvestem by the rise and fall of the gasometerhell.

4:. Inacetylene-gasgenerators,asafety-feed for carbid, consisting of a hopper provided II5 with an inlet and an outlet, acollar within the hopper surrounding the outlet, a receptacle secured within the hopper below the inlet and inclined in direction of the outlet, the upper portion of the receptacle being open and the said receptacle being provided with an outlet opposite that in the hopper, a collar surrounding the outlet fer the receptacle, a valve located over the outlet in the hopper, a second valve located over the outlet for the re- 5 ceptacle, said valves being adapted to seat themselves on the collars and extend at the outer sides of the collars, a rod to which both valves are secured, and means for operating the rod. I 0

5. In acetylene-gas generators,a safety-feed for carbid comprising a hopper having a tapering bottom and an outlet therein, a funnelshaped receptacle supported in the hopper and provided with an outlet at its contracted end in line with the outlet in the hopper, collars located at the inner ends of the outlets, a valve for each outlet, cupped to receive the collar at the 'outlet the valve is adapted to open and close. a rod connecting the valves, the valves having such relation to each other that they move simultaneously an equal distance to and from the outlets, and means for operating the rod. v

6. In acetylene-gas generators, a hopper adapted to contain and to feed carbid, the said hopper being provided with an inlet and an outlet, a funnel-shaped receptacle supported in the said hopper, which receptacle is open at the top and is provided with an outlet in its contracted end, the outlet in the receptacle being in line with the outlet for the hopper, collars located around the inner ends of the outlets for the hopper and the receptacle, cupped valves, one of which is movable to and from the outlet of the hopper and the other to and from the outlet of the receptacle, the said valves being adaptedto receive and cover the collars at the said outlets, a rod to which the said valves are secured, a shaft mounted in the hopper, a crank-arm extending from the shaft, a connection between the crank-arm and the valve-rod, a second crankarm at the outer end of the shaft, a gasometer, and a lever connected with the bell of the gasometer and adapted to engage with the outer crank-arm of the valve-shaft.

7. In a safety-feed for acetylene-gas generators, a hopper having an inlet and an outlet,

a valve at the inlet within the hopper, a valved vent-tube connecting with the inlet of the hopper and extending out therefrom, a valve at the outlet of the hopper, independent stems for the valves, having exteriorly located crank-arms inclined in opposite directions, a connecting-rod pivoted to the said cran k-arms, and a pivotal crank connection between the said connecting-rod and the stem for the ventvalve, whereby the three valves are simultaneously operated, the inlet and outlet valves in opposite directions and the vent-valve in the same direction as the inlet-valve.

8. In a safety-feed for acetylene-gas generators, a hopper having an inlet and an outlet, a valve at the inlet of the hopper and located within said hopper, the valve-stem extending out from the hopper, a crank-arm at the end of the said valve-stem, a vent-tube connecting with the inlet of the hopper and extending out from said hopper, a valve in the said venttube, a crank-arm on the stem of the venttube valve, parallel with the crank-arm on the stem of the inlet-valve, a valve located exteriorly at the outlet of the said hopper, a bandle connected with the stem of the outletvalve, the handle extending in an opposite direction to the direction of the crank-arms connected with the inlet and the vent valves, and a connecting-bar pivotally attached to the said handle and to the crank-arms of the receiving and the vent valves.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

OTTO HUBER HASNEDER.

Vtitnesses:

J. FRED. ACKER, JNo. M. BITTE 

